I require a minimum of 2 people to book a trip in order for my tours to be cost-effective. Can your platform accommodate this need?

Yes, it can. Booking restrictions allow you to operate your business in a way that makes sense for you. Choose the minimum number of travelers and advance booking window. You can even set a minimum number of guests for empty dates & times, and have a different minimum number of guests for dates and times that already have at least one booking. This protects your team from running tours for a single traveler when it is not cost-effective to do so.